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US2916553A
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High speed delta modulation encoder
Assignee: AT&T Inc
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Filing: 1957-05-31
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Granted: 1959-12-08
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Expires: 1977-05-31
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Crowley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:48
CPC Classifications
H; H04; H04L; H04L25/00; H04L25/02; H04L25/14; H03; H03M; H03M3/00; H03M3/02; H03M3/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732424A
Cited
US2636081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |